EOC 10 inch 40 caliber

EOC 10 inch 40 caliber
Twin gun turret of an Ammiraglio di Saint Bon-class battleship
Type	Naval gun
Place of origin	United Kingdom
Service history
In service	1895–1945
Used by	Argentine Navy Imperial Japanese Navy Regia Marina Spanish Navy
Wars	Russo-Japanese War Italo-Turkish War World War I
Production history
Designer	Elswick Ordnance Company
Designed	1893
Manufacturer	Elswick Ordnance Company Stabilimenti meccanici di Pozzuoli [it] Kure Naval Arsenal
Produced	1893
Variants	Pattern P Pattern P1 Pattern R Cannone da 254/40 A 1893 Cannone da 254/40 A 1899 10 inch 40 caliber Type 41 25 cm 40 caliber Type 41
Specifications
Mass	30.5 long tons (31.0 t)
Length	34.6 ft (10.5 m)
Barrel length	33.3 ft (10.1 m) 40 caliber
Shell	Separate-loading 85.7 lb (38.9 kg) bagged ballistite charge
Shell weight	480–500 lb (220–230 kg)
Caliber	10.0 inches (254 mm)
Elevation	-5° to +20°
Traverse	-80° to +80°
Rate of fire	About 1.5 rounds per minute
Muzzle velocity	2,460 ft/s (750 m/s)[1]
Maximum firing range	11.2 mi (18.0 km) at +20°[2]

The EOC 10 inch 40 caliber guns were a family of related guns designed by the Elswick Ordnance Company and produced by Armstrong Whitworth in the 1890s for export customers. EOC 10 inch 40 caliber guns were the primary armament of armored cruisers, ironclads and pre-dreadnought battleships built or refit during the 1890s. These guns and their licensed derivatives armed ships of the Argentine Navy, Imperial Japanese Navy, Regia Marina and Spanish Navy. They served in the Russo-Japanese War, Italo-Turkish War and World War I.